EP 1217737 B1 20060308 - Television tuner
Title (en)
Television tuner
Title (de)
Fernsehtuner
Title (fr)
Circuit d'accord de télévision
Publication
Application
Priority
JP 2000384917 A 20001214
Abstract (en)
[origin: EP1217737A1] A television tuner includes an input tuning circuit (3) and an interstage tuning circuit (9). Each of the tuning circuits comprises a band-switching tuning circuit (7) having a tuning inductor (3a-d) and a switching diode (3f) for switching an inductance of the inductor. A power supply voltage is applied to the anode of each of the switching diodes via each of anode-side feed resistors (5), the anode being DC-grounded via current-conducting means (4). A tuning frequency band of each of the input tuning circuit and the interstage tuning circuit is switched by applying a high or low level switching voltage to the cathode of each of the switching diodes via each of cathode-side feed resistors. <IMAGE>
IPC 8 full level
H03J 5/24 (2006.01); H04B 1/26 (2006.01); H04N 5/44 (2006.01); H04N 5/50 (2006.01)
CPC (source: EP KR US)
H03J 5/244 (2013.01 - EP US); H04N 5/50 (2013.01 - KR)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1217737 A1 20020626; EP 1217737 B1 20060308; CN 1187966 C 20050202; CN 1359233 A 20020717; DE 60117732 D1 20060504; DE 60117732 T2 20061109; JP 2002185878 A 20020628; JP 3828745 B2 20061004; KR 100407493 B1 20031128; KR 20020046991 A 20020621; MY 126827 A 20061031; US 2002075414 A1 20020620; US 6864925 B2 20050308
DOCDB simple family (application)
EP 01310237 A 20011207; CN 01140326 A 20011213; DE 60117732 T 20011207; JP 2000384917 A 20001214; KR 20010078763 A 20011213; MY PI20015546 A 20011205; US 1743301 A 20011214